To save Lead time (calendar time) we can, through Lean Six Sigma or Lean engineering the process steps that are currently being completed in series.
Another possibility is to take out some process steps from the series and do them in parallel to other process steps.
This is often called concurrent engineering; the idea being that you can design the different parts of a product at the same time. Unless concurrent or parallel processing is carefully planned and coordinated, it results in chaos.
Two things are required for Parallel processing:
- The customer (or the business) would value the reduction in lead time
- Only process steps which are independent of each other can be done in parallel
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